This is nearly identical to a system I spec'd out as a back up in case my wife goes ballistic to the $1500 rig I want to build. So ya It's solid. My only question is what are you going to use for cpu cooling? Stock? I would recommend the Cooler Master Hyper 212 Plus. It will compete with coolers twice its price.
Good call on that Antec PSU by the way.
Note the lack of FAILs and how thin the 12v graphs are. Those 12v graphs are thinner than the Thermaltake 5v graphs even at 2.4x the juice. The Corsair 750w 5v and 3.3v graphs are almost straight lines.
In case it is unclear, that is an improvement. The corsair 750w (on the next page) had a successful pull of 913 on the PSU, as compared to the last successful pull on the Thermaltake of 440.
Stick with Antec, Corsair, XFX, or Seasonic on PSUs.
I am not a big fan of OCZs, but they are way better than the Thermaltakes at least.
That is a link to a monthly full PC build competition run by this website for $500, $1000, and $2000 PCs (that being the $1000 one).
If I were in the market for a $1000 PC, I would probably start from there and then modify things as necessary rather than trying to piece things together individually if it were me. Starting with 2x 4GB sticks of RAM.
In any event, those PCs are reviewed by experts and work well.
What you have doesn't look too bad, though. Either way would be fine.